One of the things that we all find most challenging about English is how to improve our pronunciation. I guess you are all familiar with the International Phonetic Alphabet (IPA), a collection of symbols that represent the different sounds of a language. Click on the following link and watch the video about the Introduction to the sounds of English. Then, watch the videos of the sounds you find most difficult to pronounce. Liste, repeat and imitate.
Next, you can do some practice or play some games in the following links: